Process for preparing phenylalanine

Details Process for preparing phenylalanine Process for preparing phenylalanine

1984-08-14

1987-12-01

Naff, David M.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing alpha or beta amino acid or substituted amino acid...

435180, 435182, C12P 1322, C12N 1108, C12N 1104

Patent

active

047104678

ABSTRACT:
Phenylalanine is prepared by contacting phenylpyruvic acid or phenylpyruvate with an enzyme having transaminase activity in the presence of an amine donor. The enyzme may be free or immobilized or in whole cells which may be free or immobilized. The enzyme is preferably contained by E. coli ATCC 11303. Yield of phenylalanine can be improved by removing oxaloacetate, produced during reaction of the enzyme, to drive the reaction to completion. Phenylalanine may also be produced from cinnamic acid using immobilized cells having phenylalanine ammonia lyase activity.

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